1// Copyright 2009 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Test unary addition in various contexts. 29 30// Test value context. 31assertEquals(1, +'1'); 32assertEquals(1, +1); 33assertEquals(1.12, +1.12); 34assertEquals(NaN, +undefined); 35assertEquals(NaN, +{}); 36 37// Test effect context. 38assertEquals(1, eval("+'1'; 1")); 39assertEquals(1, eval("+1; 1")); 40assertEquals(1, eval("+1.12; 1")); 41assertEquals(1, eval("+undefined; 1")); 42assertEquals(1, eval("+{}; 1")); 43 44// Test test context. 45assertEquals(1, (+'1') ? 1 : 2); 46assertEquals(1, (+1) ? 1 : 2); 47assertEquals(1, (+'0') ? 2 : 1); 48assertEquals(1, (+0) ? 2 : 1); 49assertEquals(1, (+1.12) ? 1 : 2); 50assertEquals(1, (+undefined) ? 2 : 1); 51assertEquals(1, (+{}) ? 2 : 1); 52 53// Test value/test context. 54assertEquals(1, +'1' || 2); 55assertEquals(1, +1 || 2); 56assertEquals(1.12, +1.12 || 2); 57assertEquals(2, +undefined || 2); 58assertEquals(2, +{} || 2); 59 60// Test test/value context. 61assertEquals(2, +'1' && 2); 62assertEquals(2, +1 && 2); 63assertEquals(0, +'0' && 2); 64assertEquals(0, +0 && 2); 65assertEquals(2, +1.12 && 2); 66assertEquals(NaN, +undefined && 2); 67assertEquals(NaN, +{} && 2); 68